On Earth it weighs 20 kilograms.
yes
No. 1 kilogrammes = 2.2046226 pounds, so 54 kilogrammes = 119.04962 pounds and 20 pounds = 9.0718474 kilogrammes
For steel, a disc 255 millimetre diameter and 50 millimetres thick, will have a mass of 20 kilogrammes.
grammes and kilogrammes
Assuming road planings are asphalt concrete the mass of one metre cube volume is 2140 kilogrammes.
5.9736×1024 KG
It is a measure of mass, equivalent to 58,000 grams.
Weight (in kilogrammes) is equal to the mass (in Newtons) multiplied by the acceleration due to gravity (in meters per second squared).W = mgwhere g = 9.81ms-2 (on earth)
65,000 kgs
The amount of matter or stuff is measured by the mass, measured in kilogrammes and other units like grammes or pounds. It not the same as weight, which (if you are an astronaut) changes with where you are.
Even though feathers are light and rocks are heavy, when 100 kilograms of each are placed on a scale, they will exert the same downward force due to gravity. Weight is a measure of the force of gravity on an object, so in this case, both the feathers and rocks will weigh the same.
Mass does not depend on gravity, it stays the same (is conserved) in different places. But its weight - the force of gravity - varies in different places, like on the Moon it's 1/6 of what it is here. Confusion is caused by using kilogrammes for both mass and weight, but scientists use a different unit for weight/force, the Newton. On the Earth's surface a 1 kilogram mass has a weight of 9.806 Newtons.